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One Design · Keelboat

J/111 parts, rigging and specifications

Also known as: J111

The J/111 is a keelboat one-design class designed by Alan Johnstone (2010), with a published length overall of 36 ft 6 in (11.13 m). MAURIPRO lists 67 parts for the J/111 below, grouped by system, with live prices and stock.

  • Keelboat
  • 67 parts
  • 9 published figures

Your J/111 at MAURIPRO

What you can do on this page.

01Shop parts by system67 parts for the J/111, matched by part number and grouped by system.Shop all parts →
02Check the specifications9 published figures, each with its source.See specifications →
03Halyards & sheets made for it21 lines made up to this boat's lengths.Shop halyards & sheets →
04Get expert helpNot sure a part fits your J/111? Send us your sail number and year.Contact us →

Shop J/111 by system

J/111 parts

Prices and stock are live from our catalogue.

Harken part numbers cross-checked against Harken's published one-design deck layout for the J/111 (checked 2026-11-04).

Parts marked "Sized for this boat" are chosen from the manufacturer sizing guides published on our Selection Guides pages (Harken winch chart, Forespar pole guide, Harken mainsheet guide, Schaefer hardware chart) using the published dimensions of the J/111. They are not specified by the class rules; check your class rules for limits before racing.

Rope sold by the foot is added at the cut length shown on the card.

J/111 specifications

SpecificationPublished figureSource
Length overall (LOA)36.50 ft (11.10 m)Harken one-design deck layout page; matches MAURIPRO Sailboat Data, Wikipedia
Waterline length (LWL)32.70 ft (9.97 m)Harken one-design deck layout page; matches MAURIPRO Sailboat Data, Wikipedia
Beam10.80 ft (3.29 m)Harken one-design deck layout page; matches MAURIPRO Sailboat Data, Wikipedia
Draft7.20 ft (2.19 m)Harken one-design deck layout page; matches Wikipedia
Displacement9,300 lb (4,216 kg)Harken one-design deck layout page; matches MAURIPRO Sailboat Data, Wikipedia
Ballast3,515 lb (1,594 kg)Harken one-design deck layout page; matches MAURIPRO Sailboat Data, Wikipedia
Upwind sail area663 sq ft (61.6 m²)Harken one-design deck layout page
DesignerAlan JohnstoneMAURIPRO Sailboat Data; matches Wikipedia
First built / designed2010MAURIPRO Sailboat Data; matches Wikipedia

Figures are shown as each source publishes them, with the other unit converted. Class rules set the measurements that count for racing.

More for the J/111

J/111 tuning guides

  • Quantum Sails: J/111 Tuning Guide (Full Tune), Quick Tune Chart, Targets and Sail ChartVersion 2022 · 1 page
  • North Sails: North Sails J/111 Quick Tuning ChartVersion 2017 · 1 page
  • Cyclops Marine: J/111 Dynamic Tuning GuideVersion 2021 · 1 page

Tuning guides belong to the sailmakers that publish them. MAURIPRO does not host or reproduce them; ask the sailmaker or your class association for a copy.

J/111 class rules and references

  • Class rules: J/111 Class Rules 2026
  • Class association: j111class.org
  • Builder: jboats.com

References checked 2026-10-29.

J/111 buying questions

What J/111 parts does MAURIPRO carry?

67 products are listed for the J/111 on this page: halyards, sheets & control lines (16); blocks & sheaves (7); cleats, clutches & fairleads (2); travelers, tracks & cars (4); winches & handles (2); spars, poles & rig fittings (3); and more. Prices and availability shown are live from our catalogue.

How do I know a part fits my J/111?

Each part here is linked to the J/111 because its exact manufacturer part number appears on the J/111 parts lists we reviewed (including Harken's published one-design deck layout for this class). Fit can still depend on your boat's year, builder and rig, so check the product details and your class rules, or ask our technical team before you order.

Where can I find the J/111 rig dimensions?

Our J/111 Sailboat Data page lists the rig dimensions (I, J, P, E) and other published data we hold for this boat. Figures there come from a sailboat database and may differ from class measurement rules.

Can I order halyards and sheets made for the J/111?

Yes. Our J/111 - Halyards & Sheets page lists 21 halyard and sheet options made up for this boat.

Are there tuning guides for the J/111?

Sailmakers have published tuning guides for this class, including Quantum Sails (J/111 Tuning Guide (Full Tune), Quick Tune Chart, Targets and Sail Chart, 2022 (files titled 'J111_FullTune_2022WC', 'J111_QuickTune_2022WC', 'J111_Targets_2022WC', 'J111_SailChart_2022WC'; 'WC' isn't expanded in the files)); North Sails (North Sails J/111 Quick Tuning Chart, Web page, no date shown (page metadata: published 10 May 2017, modified 19 Mar 2026)); Cyclops Marine (J/111 Dynamic Tuning Guide, Undated sheet; uploaded August 2021 (URL path /2021/08/, PDF created 12 Aug 2021)). These guides belong to their publishers; MAURIPRO does not host or reproduce them, so please get them from the sailmaker or your class association.

Which rules govern the J/111?

The class is governed by its class rules (J/111 Class Rules 2026). Check the current edition with the class association before buying parts for racing.

Not sure which part fits your J/111?Send us your sail number, year and builder and our team will check it.
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All products currently in this MAURIPRO collection, with filters.

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